Checking Shaft Play and Wear. [Inquiry] What does “checking shaft end play” in my turbo mean?
[Response: Adam/Dave] Check both front to back (axial) or sideways (radial) clearance. Axial play should not be noticable ( < .008"), but radial play can be a max. of .022", which is definitely noticable. The radial clearance allows for a cushion of oil. Radial clearance may be noticeable but it still should not feel sloppy or have spots where you rotate the turbo and it has different play in different positions. When mine went bad I started to hear a ching kinda sound. I took off the intake hose and checked for play and sure enough the compresser blades could be moved into the housing once I rotated it to a particular position. Look out for wear (small chips, rough edges ) on the very tips of the compressor blades that give an indication of your air filtration quality over the years, and for rub marks on the alloy turbo housing from scraping outer blade edges. Removing the Turbo Unit: Tips and Comments [Tip from Rob Bareiss] Replacement of newer turbos is not bad as the older ones. Th
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